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Updated: Feb 18, 2026

An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids
Published on: December 4, 2017
Matter wave speckle observed in an out-of-equilibrium quantum fluid
Pedro E S Tavares1, Amilson R Fritsch1, Gustavo D Telles1
1Instituto de Física de São Carlos, Universidade de São Paulo, 13560-970 São Carlos, SP, Brazil.
Abstract:
We report the results of the direct comparison of a freely expanding turbulent Bose-Einstein condensate and a propagating optical speckle pattern. We found remarkably similar statistical properties underlying the spatial propagation of both phenomena. The calculated second-order correlation together with the typical correlation length of each system is used to compare and substantiate our observations. We believe that the close analogy existing between an expanding turbulent quantum gas and a traveling optical speckle might burgeon into an exciting research field investigating disordered quantum matter.
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